Home / 10,153.25-15,192.95-8,381.78

Finding the Fourth Proportional to 10,153.25, 15,192.95 and 8,381.78

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Solution

The fourth proportional to 10,153.25, 15,192.95 and 8,381.78 is: 12,542.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,153.25 : 15,192.95 = 8,381.78 : x
  2. Step 2: Convert to fraction form
    10,153.25/15,192.95 = 8,381.78/x
  3. Step 3: Cross multiply
    10,153.25x = 15,192.95 × 8,381.78
  4. Step 4: Simplify right side
    10,153.25x = 127,343,964.45
  5. Step 5: Solve for x
    x = 127,343,964.45/10,153.25
  6. Step 6: Final answer
    x = 12,542.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.